Scientists Discover 7 Earth-Sized Planets 40 Light Years Away

An artist's rendering of what the surface of the exoplanet TRAPPIST-1f, located in the TRAPPIST-1 system in the constellation Aquarius could look like. (Image: NASA/JPL-Caltech)

Astronomer Andrew Fraknoi joins us to talk about the latest space news, including NASA's discovery of seven earth-sized planets orbiting a dwarf star, three of which are in the habitable zone, the area around a parent star where a rocky planet is most likely to have water. We'll also talk about SpaceX's plans to send two "space tourists" around the moon in 2018 and other upcoming celestial events.